john bbant



J. BRANT. Apparatus for 'the Manufacture of Seamless Balls.

No. 207,158. Patented Aug. 20,1878.

WITNESSES: I Wm INVBNTOR:

@404 M5117 BY V ATTORNEYS. 5

'JO-HN nnmvnor PROVIDENCE, nnonn-rsmun, AssIGNoR'ro SYLVANUS Lnvyis, or SAME PLACE.

IMPROVEMENT IN APPARATUS FOR THE MANUFACTURE OF SEAMLESS .BALLS.

UNITED STATES PATENT OFFICE.

Specification forming part of Letters Patent N o. 207,158, dated August 20, 1878 application filed Ju1y3, 1878.

.To all whom it mag concern: Be it known that 1, JOHN BRANT, of Fromdeuce, in the county of Providence and State of Rhode Island, have invented a new and useful Improvement in Apparatus for Mannfacturing Seamless Balls, of which the following is a specification:

Figurel is a ,side'view of a finishing and polishing machine, partly in section to show the construction; 'Fig. 2 is a vertical crosssection of the same, taken through the line a: m, Fig. 1. Fig. 3 is a detail section taken l through the line 3 y, Fig. 1. Fig. 4 isa detail face view of one of the finishing and polishing wheels. Fig. 5 is a vertical section of the dies for drawing in theopen end of the cylindrical cup-blank. Fig. 6 is a side view of the blank after its open end has been drawn in. Fig. 7 is a verticalsection of the dies for bringing the blank to a spherical form. Fig. Sis a detail view of a completed ball.

, Similar letters of reference indicate corresponding parts.

' -The object of this invention is tofurnish an improved apparatus for manufacturing seamless balls, which will enable seamless balls of any desired size 'to be made rapidly and accurately, and which shall be simple in construction and convenient in use.

I will describe the construction of the apparatus in connection with the description of its use.

A piece of sheet metal is first struck up into the form of a cylindrical cup, A, with a convex bottom, by means of the dies nowin commen use for such purposes. The blank A 1s then placed in the sleeve B, withits convex end resting in the semi-spherical concavity in the upper end of the stud O, which stud is made of such a size that the sleeve B may,

slide up and down upon it freely.

Upon the lower; part of the stud G is placed 2 a. spiral spring, D, the lower end of which rests upon the base ofthe said stud, and upon its upper end rests the lower edge ofthe.

, sleeve B. J

The upper edge of the sleeve B is rabbeted upon its inner side to fit upon the lower edge 7. of the upper part, E, of the dies.

The lower end of the die E has a tapering J is the bed-plate or tableof the finishing 'and' polishing machine, which is supported upon legs K, of such a-length as to support the machine at a convenient height. L is a short horizontal shaft, which revolves in bearings attached to the under side of the table J and to the outer end of which is attached a pulley, M, to receive a driving-belt from any convenient power. x

I prefer to make thepulley M a cone-pulley, to enable the rapidity of motion to be varied as'required.

To the innerend of the shaft L is attached a bevelgear wheel, N, the teeth of which mesh into the teeth of the bevel-gear wheel 0, attifilflktO the lowerpart of the short vertical s a t The shaft P revolves in bearings attached to the table J, and its lower end revolves in a step attached to a cross-barot' the machine.

To the upper end of the shaft 1? is'attached a wheeLQ, above which is placed a similar wheel, R.

In the adjacent faces of the wheels R are formed anumber of concentric ring-grooves,

which are made of. difierent sizes, and are semi-cylindrical 1n their cross-section, so as to 'form tubular ring spaces or cavities when the two wheels are brought together.

To the upper side of the upper wheel, It, is

attached, or upon it isformed, an eye or socket, SLto receive the lever T, to which it is adjust-- a ly secured by a set-screw, U. One end of the lever Tis hingedto the notched or slotted Y upper end of the post or standardV.

TheloWer part of the standardV' passes down through a hole in the table J, and has a screw-thread formed upon it to lreccive the nuts W, which are screwed upon it, the one the lever T is held down at the proper place upper end of the standard X at'one side-off its slot. The other end of the button Z swings I: into a notch in the other part of the end of the 2 I coarse above and the other below the said table J, so thatthe wheels R Q may be adjusted at any desired distance apart.

The, other end of the lever T is placed in a notch or slot formed in the upper end of the standard or post X, the lower end of which is rigidly attached-to the table J. The end of in the slot of the standard X by a set-screw, Y, which passes down through the button Z, so that its forward end may rest against the upper edge of the said lever T. v

The button Z is pivoted at one'end to the,

a rapid motion is given to the wheel Q, so 1 that the ball w ill'be finished and smoothed,

' ll inequalitiesbeing removed, and at the same time thoroughly polished.

Having thus described my invention, I claim as new and desire to secure by Letters Patent . 1 The combination ofthe stud 0, having a semi-spherical cavity formed in its upper end,

7 the sliding sleeve -B,'th e spiral springzl), and

the ,die E, having a tapered or conical concavity formed in its face, with each other, for I *drawing-in the edge of'the cylindrical cupblank A, substantially "as herein shown and described. p p

The combination of the wheels Q R, havq'ng graduated concentric semi-cylindrical rin g- :groo'ves formed intheir adjacent faces, the lever T, the adjustable standard and nuts V W W, the stationary standard X, the set-screw I Y, and the button Z, with each other, with the t table A, and with the driving mechanism'M NO P, substantially asg'herein shown and de-- scribed.

JOHN'BRANT.

' Witnesses: 1

Am mm JOHN MYERS, Sui-vanes M. Lewis. 

